EXERCISE MARK AGAINST THE CORRECT ANSWER IN EACH OF THE FOLLOWING.IN 41 TO 50:

EXERCISE

MARK AGAINST THE CORRECT ANSWER IN EACH OF THE FOLLOWING.IN 41 TO 50:

41.   (112 + 5⁴) - =?

a)      67000

b)      70000

c)       76500

d)      77200

42.   (935421 x 625)=?

a)      575648125

b)      584638125

c)       584649125

d)      585628125

43.   (12345679 x 72)=?

a)      88888888

b)      888888888

c)       898989898

d)      9999999998

44.   397 x 397+104 x 104+2 x 397 x 104=?

a)      250001

b)      251001

c)       260101

d)      261001

45.   If (64)²=(36)² = 20 x X, then X =?

a)      70

b)      120

c)       180

d)      140

e)      None of these

46.   (489 + 375)² - (489 – 375)²              =?

                   (489 x 375)

a)      144

b)      864

c)       2

d)      4

e)      None of these

  

47.   (963 +476)² + (963 – 476)²             =?

                                        (963 x 963 + 476 x 476)

a) 1449

b)497

c) 2

d)4

e)None of these

48.    768 x 768 x 768 + 232 x 232 x 232          =?

                              768 x 768 – 768 x 232 + 232 x 232

a) 1000

b)536

c) 500

d)268

e)None of these

49.     854 x 854 x 854 – 276 x 276 x 276         =?

     

                                  854 x 854 + 854 x 276 x 247 x 247

a) 1130

b)578

c) 565

d)1156

e)None of these.

50.     854 x 854 x 854 – 276 x 276 x 276         =?

                                  854 x 854 + 854 x 276 x 247 x 247

a) 1130

b)578

c) 565

d)1156

e)None of these.

                           ANSWERS:

  41.(C)
  42.(B) 
 43.(B) 
 44.(B)
 45.(B)
 46.(D) 
 47.(D)
 48.(C) 
 49.(A)
 50.(B).